since when have you been so nice这是个什么句子,具体分析下语法,谢谢

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/06/30 22:18:37

since when have you been so nice这是个什么句子,具体分析下语法,谢谢
为什么要倒装

1.这是一个特殊疑问句,而疑问句序当然也就要用到倒装.
翻译：是从什么时候开始,你（变得）这么好/友善了?
2.因为疑问词when刚好做介词since的宾语,所以为了表明两者的紧密关系,就把since when一起提前了.
单独将when提前也可以,但是让看者很难分清since和when的关系.
如：I have been so nice since 2 years ago.
对2 years ago划线提问,则为：Since when have you been so nice?
3.再给楼主举些类似的句子：
What did you do it for?= For what did you do it?= Why did you do it?
With whom were you talking?= Who/Whom were you talking with?

since when have you been so nice这是个什么句子,具体分析下语法,谢谢 You have been so nice to me为什么不能用you are so nice to me? Since when you were so nice 这样表达自从何时你这么棒,可以吗 Since when you were so nice 这样表达自从何时你这么棒, 英语翻译You came to me after so long time since have been watiti we have been going out ever since.怎么翻译啊,请具体解释下. Since when have you been in this item's segment of business you are in want to me,具体分析下语法 have kept you waiting.句子分析下 when do you have the dinner?分析下句子的结构和成分,when是连词还是代词?do呢? Since when have you planted so many young trees?属于何类疑问句? 一道高中英语语法题So you mean I have been too strict with you?Well,if